PSI - Issue 72

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ScienceDirect

Procedia Structural Integrity 72 (2025) 308–314

12th Annual Conference of Society for Structural Integrity and Life (DIVK12) Method for determining the minimum anchorage length of reinforcement in concrete: an experimental study Oleksandr Chapiuk a , Oleh Kratiuk a , Iryna Zadorozhnikova a , Inna Boiarska a ,Vadym Rud a , Maksym Boiarskyi a , Ihor Mudryy b, *, Andriy Pelekh b Abstract The minimum anchoring length of the reinforcement in concrete under both single and repeated loads was experimentally determined. The limiting state of reinforcement adhesion to concrete occurs when the displacement of the free end of the rods relative to the concrete is 0.2 mm. Experiments confirmed that when reinforcement is used in a section with full design resistance, the minimum length of rod anchoring relative to this section should be at least 15d. The stresses in the rods that occur at the ultimate state of adhesion depend linearly on the anchoring length. Repeated operational level loads lead to residual slippage of the rods and do not influence the stresses in the reinforcement at ultimate state compared to a single load. © 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Aleksandar Sedmak, Branislav Djordjevic, Simon Sedmak Dr. Simon Sedmak, ssedmak@mas.bg.ac.rs, Innovation Center of Faculty of Mechanical Engineering, Belgrade, Serbia a Lutsk National Technical University, Lvivska 75, 43018 Lutsk, Ukraine b Lviv Polytechnic National University, S. Bandery 12, 79013, Lviv, Ukraine

Keywords: reinforcement;concrete; stress-strain state; tension;destruction;anchoring; strength

1. Introduction In the construction of industrial, civil, and engineering facilities, the most commonly used products, elements, and structures are made from concrete (Chapiuk et al. (2023), Dvorkin et al. (2021), Konkol (2019), Dovbenko et al. (2024), Drobyshynets et al. (2024)), wood (Pavluk et al. (2024), Roshchuk et al. (2024), Datsiuk et al. (2024), Homon et al. (2024), Aleksiievets et al. (2024)), metal, and other composite materials (Imbirovych et al. (2023), Homon et al.

* Corresponding author. Tel.: +38-067-928-25-42. E-mail address: qwert_2024@ukr.net

2452-3216 © 2026 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of Aleksandar Sedmak, Branislav Djordjevic, Simon Sedmak Dr. Simon Sedmak, ssedmak@mas.bg.ac.rs, Innovation Center of Faculty of Mechanical Engineering, Belgrade, Serbia 10.1016/j.prostr.2025.08.108